Improvement in windlasses



AMZI C. SEMPLE, OF CINCINNATI, OHIO.

IMPROVEMENT IN WINHDLASSES.

Specilication forming part of Letters Patent No. @,695, dated January 27, 1852.

To all whom L'- may concern,.-

Beit known that I, A. C. SEMPLE, of Oincinnati7 in the county of Hamilton, State of Ohio, have invented a new and Improved Spiral Windlass; and I do hereby-declare that the same is described and represented in the following specification and accompanying drawings.

The nature of my improvement consists in winding the rope upon a screw as it is turned through a fixed nut, thereby drawing the rope always in the saine direction and position as the rope winds upon the screw as fast as it passes through the fixed nut and in closeproX- imity to the nut, thus lessening the danger of bending or breaking the screw, while it lessens the labor of operating the press, the said screw having a "concave score between the threads that rits and supports it in its proper form and lessening the wear of the rope and its liability to be broken in the operation of pressing.

To enable'others to make and use my invention, I will proceed to describe its construction and the mode of using it in conneetion with the accompanying drawings, of which- Figure 1 is a perspective view of the windlass as applied to a press. Fig. 2 is a top View of the lower section as cut through the line :c and Fig. 3 representsa section of the top beam-screw and the parts containing the pulleys.

The saine letters refer to the same parts in each drawing or figure. Y

A is the base of the press, with two posts, B B, fastened to it, and these posts are also fastened to thetop C. E E are two spars which traverse in scores in the top U, and are connected together by the piece I atthe bottom and the piece J at the top. There arev l upon a pin,4 a, passing lthrough them and through the projections.V One end of the rope K is fastened to the top C and passes around the-pulleys L and J2, being fastened to and wound up around the screw F, which screw has a concave score between the threads that fits the rope and preserves it in a proper form, which screw turns in the xed nut H and posts B, and the rope winds upon the screw as fast as it passes through the nut and close to it, so as to draw the rope always in the same position. Ihe screw Fhasthespiral lever G fastened to it, which is inthe form of a fusee, and the rope G is fastened to its circumference and wound in toward the center nearly to the shaft of the screw F, the weight Ibeing attached to it to turn the spiral lever and screw and operate the press.

The press being` completed, 4as above described, the substance to be pressed is put up on the table under the piece I, that connects the spars at the bottom, and the weight I being attached to the rope G it turns the spiral lever G and-the screwF, which last turns forward in the nut H, winds up the rope K, and, drawing down the spars E E, presses the substance upou the table. Then the weight I is iirst attached, the rope acts upon the spiral lever near its fulcruln, and only a gentle pressure is ap plied to the substance upon the table; but as the spars descend the effective length of the lever increases, and the pressure upon the substance pressed is consequently increased.

What I claim as my invention in the abovedescribed press isfinding the rope upon a screw with a concave score between the threads that fit-s the rope and supports itin its proper form, thereby lessening the wear of the rope and its liability to be broken in the operation of pressing when the said screw is made to work through a iixed nut, so as toalways draw the rope in the same position, substantially as deY scribed. y

In testimony whereof I have hereunto signed my name before two subscribing witnesses.

A.. c. snMrLn.

Vitn esses EBENEZER HARRISON A. G. Novias. 

